Action Surge. Once per turn the warrior can take one extra action that can be used to do any of its actions.

Adaptability: When the warrior is targeted by a spell or effect, no matter if it succeeds or fails it will get advantage on repeated saving throws against the same spell or effect if targeted again. If targeted again it will add it's proficiency bonus to saving throws against that spell or effect if it is not already proficient.

Magic Weapon The warrior can use any weapon the DM wants and said weapon is magical and has a +3 to attack and damage rolls. If the warrior uses a thrown weapon it will always return to the warriors hand at will. 

Multiattack. The warrior makes four greatsword attacks.

Magic Greatsword. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 25(4d6 + 13) slashing damage.

Javelin. Melee or Ranged Weapon Attack: +17 to hit, reach 5 ft. or range 30/120 ft., one target. Hit: 16 (2d6+ 13) piercing damage.

The Warrior has 3 reactions. 

Parry. When hit by an attack the warrior can use one reaction to remove 1d8 + it's dexterity modifier(10) from the attack. 

Evasion. When the warrior succeds on a dexterity saving throw against a spell, it can use one reaction to take zero damage instead of half damage from the spell. 

True Strike. When the warrior lands an attack on a creature that resists or is immune to the damage type of the attack the warrior can use its reaction to ignore that resistance or immunity.